The seven lawsuits filed against Amazon.com last month and one this month bring the number of active lawsuits against the online giant to 18, according to the filing. All are tied to the release of Amazon’s new hybrid e-reader/tablet product Kindle Fire, according to published reports.

Here are the eight most recent patent infringement filings against Amazon.com:

SeptemberParallel Iron filed a complaint in the United States District Court for the District of Delaware that alleges, among other things, that certain AWS file storage systems that include a Hadoop Distributed File System infringe a patent owned by the plaintiff purporting to cover “Methods and Systems for a Storage System With a Program-Controlled Switch for Routing Data” (U.S. Patent No. 7,415,565), and seeks monetary damages, injunctive relief, costs, and attorneys fees.

Lochner Technologies filed a complaint in the United States District Court for the Eastern District of Texas that alleges, among other things, that by offering products used for desktop virtualization or cloud computing solutions that provide virtual desktop environments Amazon infringes a patent owned by the plaintiff purporting to cover a “Modular Computer System” (U.S. Patent No. 7,035,598), and seeks monetary damages, injunctive relief, costs, and attorneys fees.

Semiconductor Ideas to the Market BV filed a complaint in the United States District Court for the Eastern District of Texas. that alleges, among other things, that by offering products including our Kindle e-reader that employ receiver technology designed to diminish signal leakage Amazon infringes two patents owned by the plaintiff purporting to cover a “Receiver Comprising A Digitally Controlled Capacitor Bank” (U.S. Patent No. 7,299,018) and a “Communication Device” (U.S. Patent No. 7,072,614), and seeks monetary damages, injunctive relief, costs, and attorneys fees.

Droplets, Inc. filed a complaint in the United States District Court for the Eastern District of Texas that alleges, among other things, that by offering web applications and software Amazon infringes two patents owned by the plaintiff purporting to cover a “System and Method for Delivering a Graphical User Interface of Remote Applications Over a Thin Client” (U.S. Patent No. 6,687,745) and a “System and Method for Delivering Remotely Stored Graphics and Information” (U.S. Patent No. 7,502,838), and seeks monetary damages, injunctive relief, costs, and attorneys fees.

Execware, LLC filed a complaint in the United States District Court for the District of Delaware that alleges, among other things, that by rapidly formatting and reformatting tabular displays of records, such as product listings on our websites, Amazon infringes a patent owned by the plaintiff purporting to cover an “Integrated Dialog Box for Rapidly Altering Presentation of Parametric Text Data Objects on a Computer Display” (U.S. Patent No. 6,216,139), and seeks monetary damages, injunctive relief, costs, and attorneys fees.

Select Retrieval, Inc. filed complaints in the United States District Courts for the District of Oregon and the District of Delaware that allege, among other things, that certain aspects of our websites’ technology infringe a patent owned by the plaintiff purporting to cover “Data Display Software with Actions and Links Integrated with Information” (U.S. Patent No. 6,128,617), and seeks monetary damages, injunctive relief, costs, and attorneys fees.

LVL Patent Group, LLC filed three complaints in the United States District Court for the District of Delaware that allege, among other things, that certain aspects of our technology, including our mobile applications, infringe four patents owned by the plaintiff purporting to cover a “Telephone/Transaction Entry Device and System for Entering Transaction Data into Databases” (U.S. Patent Nos. 5,805,676; 5,987,103; and 8,019,060) and a “Data Transaction Assembly Server” (U.S. Patent No. 6,044,382), and seeks monetary damages, injunctive relief, costs, and attorneys fees.

October:Smartphone Technologies LLC filed a complaint in the United States District Court for the Eastern District of Texas that alleges, among other things, that certain aspects of our Kindle devices infringe five patents owned by the plaintiff purporting to cover a “Power-Conserving Intuitive Device Discovery Technique In A Bluetooth Environment” (U.S. Patent No. 6,950,645); a “Handheld Computer System That Attempts To Establish An Alternative Network Link Upon Failing To Establish A Requested Network Link” (U.S. Patent No. 7,506,064); a “Method And Apparatus For Communicating Information Over Low Bandwidth Communications Networks” (U.S. Patent No. RE 40,459); a “Method For Controlling A Handheld Computer By Entering Commands Onto A Displayed Feature Of The Handheld Computer” (U.S. Patent No. 6,956,562); and a “System and Method For Displaying And Manipulating Multiple Calendars On A Personal Digital Assistant” (U.S. Patent No. 6,466,236). The complaint seeks monetary damages, costs, and interest.

Amazon.com said in the release it denies any wrongdoing in each of the complaints.

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